Cab light



May 29, 1928. 1,671,680

L. C. MUELHEIM ET AL CAB LIGHT Filed Feb. 28, 1927 2 Sheets-Sheet 2 INVENTOR Leo C/Vzwlbafin 44w Patented May 29, 1928.

can LIGHT.

I v UNITED srArss a- PATENT oFFrciEf.

LEo o; Mum-1mm Ann-"Arie Nzo a. rac s m; oFBAL'rIMoRE, MARYLAND.

Application filed February 28, 1927. Serial No. 17i,4sg.

Our invention relatesto im cab lightsand has a new and improved form of mentlight wherein the elect may be entirely protected, may

provements in for one ob ect to provide cab or instruric light bulb placed andwherein the ray of light may be accurately positioned and lim rection in which it is thrown. will appear from time to the specification and claims.

ited in the di- Other objects time throughout ()ur invention is illustrated more orless diagrammatically j in drawings, wherein- Figure 1 is a side elevation direction from Figure 2 is vice of Figure 1 viewed from Figure 3 is of Figure 1;

the-

accompanying looking in the which the light comes; an elevation showing the dethe right;

a section along the line 33 Figure 4 is a section along the line H of Figure 3; j Figure 5 is a detail View light supporting element.

Like parts are indicated b tersthroughout the specification and drawings.

A is the lamp protecting closed at the bottom, provided at one side disposed narrow slot A of the single y like charac bowl. It is open at the top and with the horizontally which narrow slot is enclosed in outwardly projecting housing men'iber A integral with the are pads on the outer wall of t plane is preferably plane bounding the bowl. he bowl whose at right angles to the walls of the member A A A are cap screws threaded in these pads motive cab.

whereby the pads may be bracket or other Intcriorly with a flange B having a hOI'l screwed to a suitable supportin a loco.-

the housing or bowl is provided zontal bearing surface B B is an insulating flange adapted to rest on the bearing surfa socketed within the housing.

ce B and to be This insulat ing flange carries and may be integral with the electric light socket B in i which is threaded the usual type of electric light bulb B. B is the housing cover. at B into the housing and h It is threaded as a flange B overlying the endof the housing to make a finished joint and when screwed up clamps the flange B against the surface B of the shoulder Bto hold the light s ocket in place.

This cover B is generally curved to conform to the contour of the h ousing so that be easily re:-

.2. A housing for and the like comprising a cylindrical open through said aperture,

drical casing, open at the top, a generally spherical closure when screwedin place a close hemispherical housing is provided for the electric light.

The center of the cover B is thickened as at C to provide a socket G into which may be threaded the'sleeve C C is the conducting core passing through the sleeve C, socket C to the electric light support. G

1s a packing ring in the end of the sleeve C adapted to be compressed by the gland C" to make atight closure and hold the conductor The slot A is left open, no closing means being needed for that because the electric light; bulb itself is so far inside that it is eli'ectively protected against breakage and is so far inside that the danger of deposition of grease, dirt, andthe like on the bulb to a sufficient extent to interfere with the lighting effect is. negligible.

ended casing threaded at its open end and interiorly flanged at a point adjacent the threads, a lamp socket flanged to fit the interior oi the casingand adapted to rest upon the flange in the casing, a closure for the casing threaded to engage the threads in the casing and adapted when screwed home to lock the flange on the lamp socket against the flange in the casing from the closure for supporting the casing,

the closure being centrally apert-ured, an

electric conductor extending into the casing a plug through which the conductor passes threaded in the closure and packing means interposed between the plug and the conductor, a cap threaded on the plug to hold the packing means in place.

3. A housing for locomotive cab lamps and the like comprising a generally cylinspherical at the bottom and and means separate the bottom of the casing and being longitudinally extended parallel to the axis of l the casing. I V

Signed at Baltimore, city of Baltimore and State of Maryland this 21 day of February, 1927.'

LEO C. MUELHEIM. ALONZO G. PACK, JR. 

